Refactor context object to pass by reference

[rkodev]

Resolves #30

Adds a method prepareContext that us used to add all the content values to the request context before execution

[baywet]

Hey @rkodev this is something I noticed while working on #29 and addressed there. Can you run your tests on that PR to double check it addresses everything please? Given the nature of my changes, we'll have a bunch of conflicts if we merge both PRs, and I'll like to avoid that extra work if we can.

[rkodev]

@BayWer this is still failing on the branch, since the context values are still added during getHttpResponseMessage, but we do not receive the context object back. This pr added a single method to set all the parameters from the same point.

I can leave the PR in draft mode till we merge the other PR since it introduces far more changes and would be easier to refactor this one. If the Test work on the othe branch I'm happy to close this one

[baywet]

that's ok, proceed with this one, and I'll handle the conflicts on mine when I'm ready.
The http PR kind of depends on the abstractions (at least to be feature complete), which depends on this microsoft/kiota#1841

I still have to go through dotnet, java and TS. I don't anticipate other generation changes but they might surface up. And that might take a while during which I'd prefer avoiding blocking you.

[baywet]

can you add a changelog entry please? patch version

[rkodev]

can you add a changelog entry please? patch version

@baywet done